[Elecraft] [k2] Poor USB audio after cal

[Alan D. Wilcox]

Damon,
You say ...
"Once it comes back to OPT1 from FIL4 the audio tones are back at their 
starting points and not were I set them. The BFO value did seem to save 
however."

Did you have the freq-counter cable plugged into TP2 at the time? If you 
overlook that, you won't be able to save your BFO changes.

HTH, Alan

Alan D. Wilcox, W3DVX (K2-5373, K3-40)
570-321-1516
http://WilcoxEngineering.com
http://eBookEditor.net
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Williamsport, PA 17701


On 7/24/11 7:05 PM, KC5CQW wrote:
> About twice a year I like to run through the cal's on my K2.
> Today, I was unable to store the BFO adjustments to eeprom and I noticed
> that the USB audio sounds muddy.
> Almost like the RF pot was turned down and the 2k audio filter active. The
> RTTY (USB) mode also sounds like this.
> LSB and CW are quite loud and clear with a more believable S-Meter response.
>
> I was following the C22 cal Application Note procedure.
> The last few times I did this, the K2 "cal'ed" to within 10Hz of WWV.
> Before starting the cal today, it was 70Hz off. It is now within 30Hz post
> cal.
> The difference between TP1 and TP2 is negligible (limited by 10Hz DAC).
> My beat dial Freq. is/was 10.000.02 LSB (at this point when I triple checked
> the C22 cal)
>
> I used a soundcard program to "watch" the 10MHz WWV 500Hz and 600Hz tones
> while adjusting the BFO settings.
> Once it comes back to OPT1 from FIL4 the audio tones are back at their
> starting points and not were I set them. The BFO value did seem to save
> however. In LSB, the S-Meter showed S-3 (as did my other HF rig), on USB the
> meter was a solid S-9.
> The volume was not as loud and had more bass.
>
> I have a feeling this is just a matter of me forgetting a simple step but I
> can honestly say that I have followed the procedure word for word. I even
> double checked with the main K2 manual just to be sure.
>
> 73, Damon
>
>